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Long-term persistence and cross-wavelet transform analysis of solar filament activity
An, Jianmei1; Cai YF(蔡云芳)2; Qi, Yi1; Zuo, Yongyan1; Wang, Xianping1
会议录名称Proceedings of SPIE - The International Society for Optical Engineering - Tenth International Conference on Digital Image Processing, ICDIP 2018
2018
卷号10806
DOI10.1117/12.2503327
会议录编者/会议主办者Jiang, X; Hwang, JN
产权排序第2完成单位
收录类别EI ; CPCI
会议名称10th International Conference on Digital Image Processing (ICDIP 2018)
会议日期2018-05-11
会议地点Shanghai, China
会议赞助商Shanghai Key Lab Multidimens Informat Proc; Int Assoc Comp Sci & Informat Technol
关键词Time-frequency Signal Analysis Statistical Signal Processing Wavelet Transform Correlation Analysis
摘要

Solar time series analysis is one of the most important topics in statistical astrophysics, which aims at revealing the complex dynamical behavior of long-term solar magnetic activity. In this work, several statistical analysis techniques are combined to study the long-term persistence and phase relationship of monthly filament activity between the low latitudes and the high latitudes during the time period from 1957 April to 2010 June. Based on these advanced analysis approaches, the following remarkable results are found: (1) solar filament activity at the low latitudes lags behind that at the high latitudes with a phase shift of 40 months, and the largest positive coefficient is found to be 0.35; (2) solar filament activity at both the low and the high latitudes exhibits a strong long-term persistence behavior, that is, their nonlinear dynamical behavior could not be regarded as stochastic phenomenon; (3) the relative phase relationships between the low latitudes and the high latitudes are not in phase for the studied periodic scales, but they are coherent in the periods of 10-14 years. To sum up, the analysis results could give more useful information on our understanding the solar and the stellar dynamo theory, and also provide some crucial roles of solar magnetic activity variations.

资助项目N/A
项目资助者N/A
语种英语
学科领域太阳与太阳系
学科门类理学 ; 理学::天文学
文章类型Proceedings Paper
出版者SPIE-INT SOC OPTICAL ENGINEERING
出版地1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
ISBN号9781510621992
ISSN号0277-786X
URL查看原文
WOS记录号WOS:000452819600251
WOS研究方向Optics ; Imaging Science & Photographic Technology
WOS类目Optics ; Imaging Science & Photographic Technology
关键词[WOS]Phase Asynchrony ; Polar Faculae ; Periodicities ; Index
EI入藏号20183605779094
EI主题词Time Series Analysis
EI分类号657.2extraterrestrial Physics And Stellar Phenomena - 921.3mathematical Transformations ; 922.2mathematical Statistics - 961systems Science
引用统计
文献类型会议论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/17407
专题抚仙湖太阳观测和研究基地
通讯作者Qi, Yi
作者单位1.School of Software Engineering, Chongqing University of Arts and Sciences, Chongqing; 402160, China
2.Yunnan Observatories, Chinese Academy of Sciences, Kunming; 650216, China
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An, Jianmei,Cai YF,Qi, Yi,et al. Long-term persistence and cross-wavelet transform analysis of solar filament activity[C]//Jiang, X; Hwang, JN. 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA:SPIE-INT SOC OPTICAL ENGINEERING,2018.
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